The drive from Clifton, CO to Thornton, CO covers 244.7 miles and takes about 4h 39m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 70 BUS, Heartland Expressway, North Valley Highway for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 234.1 miles on I 70 BUS.
At current regular gas prices, budget about $36.87 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
122.4 miles from Clifton, CO
A natural place for your longest stop of the day
, about 2h 18m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 39m. Total distance: 244.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 39m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (98%). Some complex stretches to watch for.
Drive Character
This is a 4h 39m highway drive covering 244.7 miles, with most of the trip on I 70 BUS and Heartland Expressway. The longest continuous stretch is about 234.1 miles on I 70 BUS.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 15 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 BUS is the longest continuous segment at about 234.1 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 70 BUS and Heartland Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.9 miles in near I 70 BUS.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 12 significant decision points across 244.7 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 0.9 miles (I 70 BUS): Highway fork - watch signs carefully. Lane positioning matters here; at 234.3 miles (I 76 / Heartland Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 239.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 12 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
7
0.9 mi into trip|~1m in|I 70 BUS
Keep slight right at fork onto I 70 BUS toward I 70 East: Denver
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 70 East: Denver
8
234.3 mi into trip|~4h 23m in|I 76 / Heartland Expressway
Keep slight left at fork onto I 76 / Heartland Expressway toward I 76 East: Fort Morgan
Highway fork - watch signs carefully. Lane positioning matters here
Use the left lane.
Exit 269B
Toward I 76 East: Fort Morgan
8
239.4 mi into trip|~4h 29m in
Take the exit toward I 25: Fort Collins, Colorado Springs
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 5
Toward I 25: Fort Collins, Colorado Springs
7
239.6 mi into trip|~4h 30m in
Keep slight left at fork toward I 25 North: Fort Collins
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 25 North: Fort Collins
7
243.2 mi into trip|~4h 35m in
Take the exit toward Thornton Parkway
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 220
Toward Thornton Parkway
Main Roads
Road
Distance
Duration
I 70 BUS
234.1 mi
4h 23m
Heartland Expressway
5.1 mi
5m
North Valley Highway
2.2 mi
2m
Thornton Parkway
0.9 mi
1m
Dorothy Boulevard
0.2 mi
<1m
F Road
0.2 mi
<1m
Longest stretch:
I 70 BUS
— 234.1 mi, about 4h 23m
Turn-by-Turn Driving Directions
Step-by-step road directions between Clifton, CO and Thornton, CO.
1
Start on US 6
355 ft·10 sec·F Road
2
Enter roundabout onto US 6
78 ft·1 sec·F Road
3
Continue on US 6
0.1 mi·18 sec·F Road
4
Turn sharp right onto I 70 BUS
0.7 mi·1 min·I 70 BUS
5
Keep slight right at fork onto I 70 BUS
233 mi·4 hr 22 min·I 70 BUS
Toward I 70 East: DenverUse the slight right lane.
6
Keep slight left at fork onto I 76
5.1 mi·5 min·Heartland Expressway
Exit 269BToward I 76 East: Fort MorganUse the left lane.
7
Take the exit
0.2 mi·20 sec
Exit 5Toward I 25: Fort Collins, Colorado SpringsUse the slight right lane.
8
Keep slight left at fork
1.4 mi·2 min
Toward I 25 North: Fort CollinsUse the slight left / slight right lanes.
9
Merge onto I 25
0.9 mi·1 min·North Valley Highway
10
Keep slight right at fork onto I 25
1.3 mi·1 min·North Valley Highway
Use the slight right lane.
11
Take the exit
0.4 mi·43 sec
Exit 220Toward Thornton ParkwayUse the slight right lane.
12
Turn right onto Thornton Parkway
0.9 mi·1 min·Thornton Parkway
Use the left / straight / right lanes.
13
Turn right onto Dorothy Boulevard
0.2 mi·51 sec·Dorothy Boulevard
Use the right lane.
14
Turn right
116 ft·8 sec
15
Arrive at destination
Trip Plan
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 122.4 miles from Clifton, CO, or about 2h 18m into the drive.
The longest continuous stretch on this route runs about 234.1 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 54 miles or 1h 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 122.4 miles or 2h 18m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 46m
Traffic, exits, and arrival timing usually matter more near Thornton, CO than in the middle of the route.
Before You Leave
+
Open the route before leaving Clifton, CO so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Clifton, CO
This is one driving day of about 244.7 miles and 4h 39m.
Your first comfortable stop window is around 54 miles from Clifton, CO.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 70 BUS for about 234.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 122.4 mi from Clifton, CO
· 2h 18m into the drive
Place data sourced from public business listings. Hours and availability may vary.
National Parks Near This Route
Worth a detour if your schedule allows.
Colorado National Monument
National Monument
Colorado National Monument preserves one of the grand landscapes of the American West. But this treasure is much more than a monument. Towering monoliths exist within a vast plateau and canyon panoram...
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $26 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
73.4
0
$25.69
$11.75
Efficient EV
61.2
0
$21.41
$9.79
EV Truck/SUV
97.9
1
$34.26
$15.66
Gas CO2
86 kg
EV CO2
29 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 17, 2026
Origin
Clifton, CO
Morning
in Clifton on Friday
Local time
9:14 AM
MDT
Current temp
71°F
Unavailable
Live forecast
Destination
Thornton, CO
Morning
in Thornton on Friday
Local time
9:14 AM
MDT
Current temp
41°F
Rain And Snow Showers
NNE 8 to 14 mph79% chanceLive forecast
Winter Weather Advisory
Winter Weather Advisory issued April 17 at 4:15AM MDT until April 17 at 3:00PM MDT by NWS Denver CO
Winter Weather Advisory
Winter Weather Advisory issued April 17 at 4:15AM MDT until April 17 at 5:00PM MDT by NWS Denver CO
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
30 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 39m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Clifton, CO to Thornton, CO covers 244.7 miles and takes about 4h 39m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70 BUS, Heartland Expressway, North Valley Highway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 122.4 miles from Clifton, CO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $36.87 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 12 significant decision points across 244.7 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 0.9 miles (I 70 BUS): Highway fork - watch signs carefully. Lane positioning matters here; at 234.3 miles (I 76 / Heartland Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 239.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
The route from Clifton, CO to Thornton, CO does not surface many named destination signs beyond the main corridor.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
